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Electrochemical characteristics of activated carbon nanofiber electrodes for supercapacitors

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a b s t r a c t
In this work, poly(amide imide) solutions in dimethylformamide were electrospun into webs consisting
of 350nm ultrafine nanofibers. These nanofiber webs were used to produce activated carbon nanofibers
(ACNFs), through stabilization and carbonisation–activation processes. Experimental results indicated
that ACNFs activated at 800 ◦C afforded the highest specific surface area but low mesopore volume. The
high specific surface area, mainly due to the micropores, introduced maximum specific capacitance at
low current density (150 F g−1 at 10mAg−1). Elevating the volume fraction of mesopores gave maximum
specific capacitance at high current density (100 F g−1 at 1000mAg−1), which could be explained on the
basis of ion mobility in the pores. Thus, the capacitance of the supercapacitors was strongly dependent
on the specific surface area and micro- or mesopore volume of the ACNFs.
Keywords: Activated carbon nanofibers, Micropore, Mesopore, Specific capacitance, Supercapacitors

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Informasi Detail

Judul Seri

Materials Science and Engineering

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved., 2009

Deskripsi Fisik

Materials Science and Engineering B 164 (2009) 106–111

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

yuli/agus

Versi lain/terkait

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